Logging block



J. E. HOLDEN LOGGING BLOCK Filed Oct. 21, 1926 5 l llll 15mm: aw u x m E a E \N a w l ww mu 2 W Y M K mm H mu; om NN N INVENTOR b a/fies E. HOLDEN ATTORNEY.

7 Patented May 26, 1931 J'AMEs E. H LDEN, or oswEeo; oREeon LOGGING BLOCK Application filed October 21, 1926. seriarm. 143,029. 2

. This invention relates generally to blocks for. wire rope, and particularly to a spec al form of block in which roller bearings are employed.

5 .The first object of this invention isto provide an exceedingly simple and efficient form of logging block which will be easy to manufactureand assemble, as well as to take down for replacement and repairs. 10 .The second object is to so construct the block that suitable material, such as manganese'steel can be employed WlthOHhCZLUSIDg the manufacturing cost to be unduly high "The third object is to provide'a. special form ofadjustment for the roller'bearlngs with .a locking means therefor which, although "capable of fine adjustrnents is extremely rugged and'has no fine or dehcate partsto be lost in thewoods or to get out of order.

The, fourth object is to provide a special form of sheave having a straight bore for the purpose of facilitating the finishlng thereof. I

These, and other objects, become -more apparent from the specification follo-w ing as illustrated-in the accompanying draw- 'ings, in which: v

.Figure l,is a side elevation of the block along the line 22 in Section 1. 1 Figureg is a longitudinal section-through-the sheave of which Figure 'is a transverse section 7 taken along the line H in Figure Figure 5 is a side elevation of the split ring which fits into 'a groove in the sheave. (Figure 6 is 'a vertical section through the ring shown in Figure 5. Figure 7 is an elevation of the sheave pin." Figure '8 is an end elevation of Figure 7 Figure 9 is an end elevation of one of the locking nuts of which Figure 10 is a section taken along the line'lO lo in'Figure 9 Figure ll is an end elevation of one of the locking plates of which Figure '12 is a 7 vertical section. V a

Similar numbers of reference refer to similar parts throughout the several views. r Referring ,in 'detail to the drawings, the

' of which Figure 2 is a'vertical section takenv device iIlJbeQseen to consist-of a pair of block sides which are joined amass the shackle 14 and the 'boltsl5n The pin 16 is provided on each side with a shouldered portion 17 each of which has two fiat spots 18 formed thereon. Outside of'the shouldered portions 17 are the threaded shanks 19 which pass through the sides 13 c and are provided with nuts 20. .In connection with this device, is used 'a sheave. 21,:preferably made of manganese steel on account of the hard wear. to which suchparts are subjected] The bore22 of this sheave 'is ground to size andjnearrthe middle thereof is formed a-groovel 23, pref erably .by'casting: .andthenfinishing'lthe groove with a grinding wheel."- Intothe groove 23 is snapped: aring 24 which forms a; shoulder in the middle of'the sheave.', on each side of the ring. 24 is placed theroller bearing 25 and outside of each roller jbearin'g 25 is placedan adjusting-nut 26, each of which is threaded onto its endof the pinll6; It is preferable to groove the outervedge of thenut 26, as,-shown,.for the purpose of forming a seal betweenthe sheave and. the 7 nut toexclude dirt and'toretainthe lubricant.

On oneface of the nut,26 are formed a pin rality of lugs 27 whichlareadap-ted to receive the laterally projecting lugs 28 of-the locliing plate 29 whose elongated hole 30 fits over the flattened shouldered member 17., The assembling of thedevice is as follows: The ring'24; is snappedintolposition in the sheave 21 and the bearings .25 with the pin 8 5 and nuts 26, as wellas the locking plates 29, are now put intoplace It is now a simple matter to slip the ends) 19 of thefpin .16 through their respective holes in the block sides 13 and after the separate nuts 26 have been rotated to give, the desired amounti of: clearance the locking. plates 29 ,ar e'fdrop'ped into position and the block, side 13is closed downthereon and locked theretoby means of the nut 20. It is preferable, of course, to

. provide the usual bolts31 which pass through the lugs32 on ftheopen end ofthe block; The

' 1 bolts 31 have spacing pillars 33'thereon which hold the block sides'uniforml'y in'ipositionf.

It can readily be seen that'when once an ce '5 threadedfoneach end of said'enlarged central adjustment has been made for the hearings in this block that it will be impossible for them to get out of adjustment without first releasing the block sides so that the locking for forming a shoulder between the roller bearings that this could be dispensed with if the sheave 21 weremadeof'armateria-l,

which would permit easymachining, in which event the shoulder would be incorporated with the body of the sheave; The roller bearings25 include theusual cups 25fA and more threads for the nut.

cones 25-B. g Y

: Again, in certain instances the lo cking member 29. could be made from plate stock by c having its extreme ends formed into the shape of the space between the-lugs 27, in 'which'case it would be desirabletoomit the hub 26A, whose'fun'ction it to provide I amaware thatfmanyforms of logging blocks have been constructed inthepast; I therefore do not intend to coversilch devices "broadly butfljdo intend to cover all such "forms and m" difications thereof'as fairly I claim: V I 1. A loggin block having, in combination, a pairof. bloci 7 j sides; a pin projecting through both. of said sides, said pin having shouldered flattened within the appended sides; a shackle j oinin'gfsaid' ends against the inn'enfaces .offsaid block sides ,1' roller hearings on said pin; a "shea v e around said: bearlngs; a nut near each end of said pin'fo'r' adjusting said bearings; and a locking plate on each flattened portion-{of "said pin for preventing'therotation of the adjacent nut after adjustment as long as said sides engage thej ends 101 the flattened a portionsof'said pin.

afstationary pin'fhaving its central portion portions only slightly reducedand flattened;

a sheave on said'pin having a bearing spacing "shoulder in its'bore a roller bearingin each end of said sheave aroundsaidlpin; a nut ortion of said pin'foradjustingits adjacent ing but in a mannerto' prevent rotation thereof; block sides for receiving the extreme ends of said pin having nut recesses formed in their; uter faces; andn'uts in said recesses for holding said block sides against said looking plates. f

have a 3; A logging blockhaving pair of block sides with a shackle hinged between same and having a pair of'spacing pillars atvthe oppositesides of theyblock, in combination .With a stationary pin having an enlarged middle portion the ends 7 of j which are threaded and having smaller shouldered portion-s against said middlep'ortioii's whose surfaces are flattened for holding purposes, said i pin having smaller threaded outer ends which are'supported' in's'aid block sides; a pair of- :roller bearings including a cup and cone on nuts having lugs formed on their outer faces and-each flattened portion of said pin having a locking plate thereon which engages; the v lugs of its nearest nut in a manner to prevent the nut from turning when said locking plate is held in place by the sides of said block.

l. In a logging block'the combination of'a sheavehaving a cylindrical boire and having a shoulder-formed 'near themiddle'po'rtion of the bore, roller bearings, withinsaid bore A on opposite sides of-s'aid-shoulder,

passing througli said bearings having. an enlarged central port1on, -the outer ends of which are threaded and" protrnde from-said bearings,- a circular nut; on each threaded.

portion within the V outermost portion of. the

bore, each circular n ut""having recesses formedin its outer face, said pin having-a double shoulder formed at 'each end thereof,

the outermost shoulder being threaded and the innermost shoulder beingfiattened on the cupy certain of the recesses in said circular nuts, said locking plates'being"non rotatable Y with relation to said; pinwhenmounted on 1 said shoulders, supports for the outermost 2. In a logging sheave, the combinationof portions of said" pins througliwhich same said locking plates in: a manner that they may beheld inposition-on said innermost shouldersand prevent the" relative rotation of said circular nuts;

5. In a logging :blockcthe-rcombination ofa shackle with; arpai'r of'spaced block sides project and' nuts on th e outermost'endslof c I said pins for holding said supports againsts hingedtosaid shackle," each. of said block sides having an openingformed; therein for the reception ofasheavelpin, the outer end of each openinghavi ng ahexagonal counterbore adapted to receive a nut,:a sheave pin having de fi ds. d ptd to project throughsaid block sides," andanut on each pin end wherebiv'isaid block sides; may be held in spaced relation,aiijadjustment of said "spaced relation bei'ng' secured bye relative a block side, each of said block sides haV- rotation of said block sides either of which must first be freed from said shackle.

6. In a logging block the combination of a shackle having hinged to each end thereof a block side, each of said block sides having a pin opening formed therein, each of said pin openings having its outer endprovided with a flat sided recess, a pin having an enlarged middle portion and reduced end portions, said end portions projecting through said pin openings, and having threads formed therein for the reception of a flat sided nut adapted to occupy said pin openings flattened recess, each of said block sides forming a wrench for its respective nut.

7. In a logging block the combination of a shackle having hinged to each end thereof ing a pin opening formed therein, each of said pin openings having its outer end pro.-

' vided with a flat sided recess, a pin having an enlarged middle portion and reduced end said end portions projecting through said pin openings, and having threads formed therein for the reception of a flat sided nut adapted to occupy said pin openings flattened recess, each of said block sides forming a wrench for its respective nut, said pin having the outer ends of its enlarged portion threaded, any, anti-friction bearing mounted on said enlarged portion,

an adjusting nut on each threaded end of i said enlarged portion of the pin, a locking plate nonrotatably mounted on said pin on the outer side of each nut and on the inner side of each block side, said locking plate engaging its respective nut to preventits rotation, means for spacing the ends of said block sides opposite said shackle, and a sheave between said block sides supported by 7 said anti-friction bearing.

JAMES E. HOLDEN. 

